Axial plunger motor

Abstract

The invention belongs to the technical field of hydraulic transmission device, and particularly relates to an axial plunger motor which comprises a shell body, a cylinder body, a transmission shaft, an inclined plate, a flow distribution shaft, a slipper assembly and plungers; the transmission shaft and the inclined plate are connected into an integral structure; the shell body and the cylinder body are fixedly connected; the shell body is provided with the inclined plate; the cylinder body is provided with the flow distribution shaft; the inclined plate and the flow distribution shaft are fixedly connected; the cylinder body is provided with a plurality of plunger holes; the slipper assembly is contacted with an inclined face of the inclined plate; the plungers are connected with the slipper assembly and are inserted into the plunger holes. The transmission shaft and the inclined plate become one, so as to realize synchronous rotation; and a flow distribution plate is canceled, a shaft flow distribution scheme is adopted, and thus the shortcomings of a conventional axial plunger motor are overcome.

Description

technical field [0001] The invention belongs to the technical field of hydraulic transmission devices, in particular to an axial piston motor. Background technique [0002] Axial piston motor is the main actuator of modern hydraulic high-pressure transmission. Although the relevant technology of axial piston motor has been relatively perfect, there are still many problems, which limit the further improvement of performance. The existing problems mainly include: (1) The transmission shaft drives the cylinder body to rotate, and there is a dynamic unbalanced axial force and radial force in the work, which affects the efficiency and reliability of the motor, and also brings mechanical vibration and noise; (2) ) There is a relatively complex force and a high-precision fit between the friction pair of the cylinder block and the valve plate. There is also a high rotational speed during work, which requires high machining accuracy and material characteristics. The parts with a hig...

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Problems solved by technology

[0002] Axial piston motor is the main actuator of modern hydraulic high-pressure transmission. Although the relevant technology of axial piston motor has been relatively perfect, there are still many problems, which limit the further improvement of performance.

The existing problems mainly include: (1) The transmission shaft drives the cylinder body to rotate, and there is a dynamic unbalanced axial force and radial force in the work, which affects the efficiency and reliability of the motor, and also brings mechanical vibration and noise; (2) ) There is a relatively complex force and a high-precision fit between the friction pair of the cylinder block and the valve plate. There is also a high rotational speed during work, which requires high machining accuracy and material characteristics. The parts with a high failure rate of the plunger motor have a great influence on the efficiency and reliability of the axial plunger motor; (3) the existing plunger motor has a complex structure and requires high machining accuracy and shape and position tolerances of parts. As a result, the axial piston motor has poor anti-pollution ability and high cost; (4) the existing axial piston motor has poor low-speed performance and cannot work well in low-speed conditions, which limits the application occasions of the axial piston motor

[0003] Due to the above-mentioned problems of axial piston motors and high material and technical requirements, the country still lacks theoretical systems and products with independent intellectual property rights. Almost all high-end piston motor products in the Chinese market are monopolized by foreign products, which greatly limits Development of Axial Piston Motor Industry in China

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